IPA: /səˈplɛtəri/
KK: /səˈplɛtəri/
Relating to something that is supplementary or additional, often used in contexts where something is provided to fill a gap or deficiency.
The suppletory materials were provided to help students understand the subject better.
Something that provides what is needed or fills a gap.
The teacher provided a suppletory resource to help students understand the topic better.
Suppletory → It is formed from "suppletus" (meaning filled up or completed) and the suffix "-ory" (meaning relating to or characterized by). The word "suppletory" refers to something that serves to fill in or complete a gap.
Think of something that 'fills up' ('suppletus') a gap or need — that's what suppletory means.
No commonly confused words.